I am trying to configure the HS OTG port on the STM32H747I-DISCO dev board, but setting "Use external vbus" seems to be not enough. I can measure 0.8V on the CPEN line (measured from R11) but I don't see anything on the OUT line of the voltage switch (measured from the positive terminal of C7) and LD7 does not turn on. Is 0.8V the expected output voltage for CPEN? I do not see a value for TYP on the USB3320C-EZK datasheet.
Is there more configuration I am missing?
